Joseph Tsai

MOTD Generator

Custom message-of-the-day (MOTD) generator intended to be informative about the system you are logging in to. It will highlight potential issues that may need to be addressed.


Very simple wallpaper changing daemon for Gnome3 desktop environments.


An electromagnetically powered handgun.

HDD Clock

A persistence of vision (POV) clock built on a 2.5" hard disk drive (HDD).

Mario Doorbell

A custom doorbell design that plays the Mario coin sounds upon every press.

Tri Approx

Experiments in fixed-point approximation of trigonometric functions.


Parallelized XZ compression library for Go. It wraps the popular C liblzma library.


Parallelized pseudo-random number generator (PRNG) designed to be a faster alternative to /dev/urandom.

Matrix Transpose

Experiments in efficient transpose of bit-matrices.

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